diff options
author | Steven Rostedt <srostedt@redhat.com> | 2010-05-21 11:49:57 -0400 |
---|---|---|
committer | Steven Rostedt <rostedt@goodmis.org> | 2010-05-21 11:49:57 -0400 |
commit | ff5f149b6aec8edbfa3698721667acd043009a33 (patch) | |
tree | d052553eb296dfee3f01b1cb2b717cb7ccf3127a /tools/perf/util/quote.c | |
parent | f0218b3e9974f06014b61be8987159f4a20e011e (diff) | |
parent | 580d607cd666dfabfc1c7b0fb08c8ac690c7c87f (diff) |
Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-7
Conflicts:
include/linux/ftrace_event.h
include/trace/ftrace.h
kernel/trace/trace_event_perf.c
kernel/trace/trace_kprobe.c
kernel/trace/trace_syscalls.c
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf/util/quote.c')
-rw-r--r-- | tools/perf/util/quote.c | 433 |
1 files changed, 1 insertions, 432 deletions
diff --git a/tools/perf/util/quote.c b/tools/perf/util/quote.c index 2726fe40eb5d..01f03242b86a 100644 --- a/tools/perf/util/quote.c +++ b/tools/perf/util/quote.c | |||
@@ -1,8 +1,6 @@ | |||
1 | #include "cache.h" | 1 | #include "cache.h" |
2 | #include "quote.h" | 2 | #include "quote.h" |
3 | 3 | ||
4 | int quote_path_fully = 1; | ||
5 | |||
6 | /* Help to copy the thing properly quoted for the shell safety. | 4 | /* Help to copy the thing properly quoted for the shell safety. |
7 | * any single quote is replaced with '\'', any exclamation point | 5 | * any single quote is replaced with '\'', any exclamation point |
8 | * is replaced with '\!', and the whole thing is enclosed in a | 6 | * is replaced with '\!', and the whole thing is enclosed in a |
@@ -19,7 +17,7 @@ static inline int need_bs_quote(char c) | |||
19 | return (c == '\'' || c == '!'); | 17 | return (c == '\'' || c == '!'); |
20 | } | 18 | } |
21 | 19 | ||
22 | void sq_quote_buf(struct strbuf *dst, const char *src) | 20 | static void sq_quote_buf(struct strbuf *dst, const char *src) |
23 | { | 21 | { |
24 | char *to_free = NULL; | 22 | char *to_free = NULL; |
25 | 23 | ||
@@ -41,23 +39,6 @@ void sq_quote_buf(struct strbuf *dst, const char *src) | |||
41 | free(to_free); | 39 | free(to_free); |
42 | } | 40 | } |
43 | 41 | ||
44 | void sq_quote_print(FILE *stream, const char *src) | ||
45 | { | ||
46 | char c; | ||
47 | |||
48 | fputc('\'', stream); | ||
49 | while ((c = *src++)) { | ||
50 | if (need_bs_quote(c)) { | ||
51 | fputs("'\\", stream); | ||
52 | fputc(c, stream); | ||
53 | fputc('\'', stream); | ||
54 | } else { | ||
55 | fputc(c, stream); | ||
56 | } | ||
57 | } | ||
58 | fputc('\'', stream); | ||
59 | } | ||
60 | |||
61 | void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen) | 42 | void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen) |
62 | { | 43 | { |
63 | int i; | 44 | int i; |
@@ -71,415 +52,3 @@ void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen) | |||
71 | die("Too many or long arguments"); | 52 | die("Too many or long arguments"); |
72 | } | 53 | } |
73 | } | 54 | } |
74 | |||
75 | char *sq_dequote_step(char *arg, char **next) | ||
76 | { | ||
77 | char *dst = arg; | ||
78 | char *src = arg; | ||
79 | char c; | ||
80 | |||
81 | if (*src != '\'') | ||
82 | return NULL; | ||
83 | for (;;) { | ||
84 | c = *++src; | ||
85 | if (!c) | ||
86 | return NULL; | ||
87 | if (c != '\'') { | ||
88 | *dst++ = c; | ||
89 | continue; | ||
90 | } | ||
91 | /* We stepped out of sq */ | ||
92 | switch (*++src) { | ||
93 | case '\0': | ||
94 | *dst = 0; | ||
95 | if (next) | ||
96 | *next = NULL; | ||
97 | return arg; | ||
98 | case '\\': | ||
99 | c = *++src; | ||
100 | if (need_bs_quote(c) && *++src == '\'') { | ||
101 | *dst++ = c; | ||
102 | continue; | ||
103 | } | ||
104 | /* Fallthrough */ | ||
105 | default: | ||
106 | if (!next || !isspace(*src)) | ||
107 | return NULL; | ||
108 | do { | ||
109 | c = *++src; | ||
110 | } while (isspace(c)); | ||
111 | *dst = 0; | ||
112 | *next = src; | ||
113 | return arg; | ||
114 | } | ||
115 | } | ||
116 | } | ||
117 | |||
118 | char *sq_dequote(char *arg) | ||
119 | { | ||
120 | return sq_dequote_step(arg, NULL); | ||
121 | } | ||
122 | |||
123 | int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc) | ||
124 | { | ||
125 | char *next = arg; | ||
126 | |||
127 | if (!*arg) | ||
128 | return 0; | ||
129 | do { | ||
130 | char *dequoted = sq_dequote_step(next, &next); | ||
131 | if (!dequoted) | ||
132 | return -1; | ||
133 | ALLOC_GROW(*argv, *nr + 1, *alloc); | ||
134 | (*argv)[(*nr)++] = dequoted; | ||
135 | } while (next); | ||
136 | |||
137 | return 0; | ||
138 | } | ||
139 | |||
140 | /* 1 means: quote as octal | ||
141 | * 0 means: quote as octal if (quote_path_fully) | ||
142 | * -1 means: never quote | ||
143 | * c: quote as "\\c" | ||
144 | */ | ||
145 | #define X8(x) x, x, x, x, x, x, x, x | ||
146 | #define X16(x) X8(x), X8(x) | ||
147 | static signed char const sq_lookup[256] = { | ||
148 | /* 0 1 2 3 4 5 6 7 */ | ||
149 | /* 0x00 */ 1, 1, 1, 1, 1, 1, 1, 'a', | ||
150 | /* 0x08 */ 'b', 't', 'n', 'v', 'f', 'r', 1, 1, | ||
151 | /* 0x10 */ X16(1), | ||
152 | /* 0x20 */ -1, -1, '"', -1, -1, -1, -1, -1, | ||
153 | /* 0x28 */ X16(-1), X16(-1), X16(-1), | ||
154 | /* 0x58 */ -1, -1, -1, -1,'\\', -1, -1, -1, | ||
155 | /* 0x60 */ X16(-1), X8(-1), | ||
156 | /* 0x78 */ -1, -1, -1, -1, -1, -1, -1, 1, | ||
157 | /* 0x80 */ /* set to 0 */ | ||
158 | }; | ||
159 | |||
160 | static inline int sq_must_quote(char c) | ||
161 | { | ||
162 | return sq_lookup[(unsigned char)c] + quote_path_fully > 0; | ||
163 | } | ||
164 | |||
165 | /* | ||
166 | * Returns the longest prefix not needing a quote up to maxlen if | ||
167 | * positive. | ||
168 | * This stops at the first \0 because it's marked as a character | ||
169 | * needing an escape. | ||
170 | */ | ||
171 | static ssize_t next_quote_pos(const char *s, ssize_t maxlen) | ||
172 | { | ||
173 | ssize_t len; | ||
174 | |||
175 | if (maxlen < 0) { | ||
176 | for (len = 0; !sq_must_quote(s[len]); len++); | ||
177 | } else { | ||
178 | for (len = 0; len < maxlen && !sq_must_quote(s[len]); len++); | ||
179 | } | ||
180 | return len; | ||
181 | } | ||
182 | |||
183 | /* | ||
184 | * C-style name quoting. | ||
185 | * | ||
186 | * (1) if sb and fp are both NULL, inspect the input name and counts the | ||
187 | * number of bytes that are needed to hold c_style quoted version of name, | ||
188 | * counting the double quotes around it but not terminating NUL, and | ||
189 | * returns it. | ||
190 | * However, if name does not need c_style quoting, it returns 0. | ||
191 | * | ||
192 | * (2) if sb or fp are not NULL, it emits the c_style quoted version | ||
193 | * of name, enclosed with double quotes if asked and needed only. | ||
194 | * Return value is the same as in (1). | ||
195 | */ | ||
196 | static size_t quote_c_style_counted(const char *name, ssize_t maxlen, | ||
197 | struct strbuf *sb, FILE *fp, int no_dq) | ||
198 | { | ||
199 | #define EMIT(c) \ | ||
200 | do { \ | ||
201 | if (sb) strbuf_addch(sb, (c)); \ | ||
202 | if (fp) fputc((c), fp); \ | ||
203 | count++; \ | ||
204 | } while (0) | ||
205 | |||
206 | #define EMITBUF(s, l) \ | ||
207 | do { \ | ||
208 | int __ret; \ | ||
209 | if (sb) strbuf_add(sb, (s), (l)); \ | ||
210 | if (fp) __ret = fwrite((s), (l), 1, fp); \ | ||
211 | count += (l); \ | ||
212 | } while (0) | ||
213 | |||
214 | ssize_t len, count = 0; | ||
215 | const char *p = name; | ||
216 | |||
217 | for (;;) { | ||
218 | int ch; | ||
219 | |||
220 | len = next_quote_pos(p, maxlen); | ||
221 | if (len == maxlen || !p[len]) | ||
222 | break; | ||
223 | |||
224 | if (!no_dq && p == name) | ||
225 | EMIT('"'); | ||
226 | |||
227 | EMITBUF(p, len); | ||
228 | EMIT('\\'); | ||
229 | p += len; | ||
230 | ch = (unsigned char)*p++; | ||
231 | if (sq_lookup[ch] >= ' ') { | ||
232 | EMIT(sq_lookup[ch]); | ||
233 | } else { | ||
234 | EMIT(((ch >> 6) & 03) + '0'); | ||
235 | EMIT(((ch >> 3) & 07) + '0'); | ||
236 | EMIT(((ch >> 0) & 07) + '0'); | ||
237 | } | ||
238 | } | ||
239 | |||
240 | EMITBUF(p, len); | ||
241 | if (p == name) /* no ending quote needed */ | ||
242 | return 0; | ||
243 | |||
244 | if (!no_dq) | ||
245 | EMIT('"'); | ||
246 | return count; | ||
247 | } | ||
248 | |||
249 | size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, int nodq) | ||
250 | { | ||
251 | return quote_c_style_counted(name, -1, sb, fp, nodq); | ||
252 | } | ||
253 | |||
254 | void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path, int nodq) | ||
255 | { | ||
256 | if (quote_c_style(prefix, NULL, NULL, 0) || | ||
257 | quote_c_style(path, NULL, NULL, 0)) { | ||
258 | if (!nodq) | ||
259 | strbuf_addch(sb, '"'); | ||
260 | quote_c_style(prefix, sb, NULL, 1); | ||
261 | quote_c_style(path, sb, NULL, 1); | ||
262 | if (!nodq) | ||
263 | strbuf_addch(sb, '"'); | ||
264 | } else { | ||
265 | strbuf_addstr(sb, prefix); | ||
266 | strbuf_addstr(sb, path); | ||
267 | } | ||
268 | } | ||
269 | |||
270 | void write_name_quoted(const char *name, FILE *fp, int terminator) | ||
271 | { | ||
272 | if (terminator) { | ||
273 | quote_c_style(name, NULL, fp, 0); | ||
274 | } else { | ||
275 | fputs(name, fp); | ||
276 | } | ||
277 | fputc(terminator, fp); | ||
278 | } | ||
279 | |||
280 | void write_name_quotedpfx(const char *pfx, ssize_t pfxlen, | ||
281 | const char *name, FILE *fp, int terminator) | ||
282 | { | ||
283 | int needquote = 0; | ||
284 | |||
285 | if (terminator) { | ||
286 | needquote = next_quote_pos(pfx, pfxlen) < pfxlen | ||
287 | || name[next_quote_pos(name, -1)]; | ||
288 | } | ||
289 | if (needquote) { | ||
290 | fputc('"', fp); | ||
291 | quote_c_style_counted(pfx, pfxlen, NULL, fp, 1); | ||
292 | quote_c_style(name, NULL, fp, 1); | ||
293 | fputc('"', fp); | ||
294 | } else { | ||
295 | int ret; | ||
296 | |||
297 | ret = fwrite(pfx, pfxlen, 1, fp); | ||
298 | fputs(name, fp); | ||
299 | } | ||
300 | fputc(terminator, fp); | ||
301 | } | ||
302 | |||
303 | /* quote path as relative to the given prefix */ | ||
304 | char *quote_path_relative(const char *in, int len, | ||
305 | struct strbuf *out, const char *prefix) | ||
306 | { | ||
307 | int needquote; | ||
308 | |||
309 | if (len < 0) | ||
310 | len = strlen(in); | ||
311 | |||
312 | /* "../" prefix itself does not need quoting, but "in" might. */ | ||
313 | needquote = (next_quote_pos(in, len) < len); | ||
314 | strbuf_setlen(out, 0); | ||
315 | strbuf_grow(out, len); | ||
316 | |||
317 | if (needquote) | ||
318 | strbuf_addch(out, '"'); | ||
319 | if (prefix) { | ||
320 | int off = 0; | ||
321 | while (off < len && prefix[off] && prefix[off] == in[off]) | ||
322 | if (prefix[off] == '/') { | ||
323 | prefix += off + 1; | ||
324 | in += off + 1; | ||
325 | len -= off + 1; | ||
326 | off = 0; | ||
327 | } else | ||
328 | off++; | ||
329 | |||
330 | for (; *prefix; prefix++) | ||
331 | if (*prefix == '/') | ||
332 | strbuf_addstr(out, "../"); | ||
333 | } | ||
334 | |||
335 | quote_c_style_counted (in, len, out, NULL, 1); | ||
336 | |||
337 | if (needquote) | ||
338 | strbuf_addch(out, '"'); | ||
339 | if (!out->len) | ||
340 | strbuf_addstr(out, "./"); | ||
341 | |||
342 | return out->buf; | ||
343 | } | ||
344 | |||
345 | /* | ||
346 | * C-style name unquoting. | ||
347 | * | ||
348 | * Quoted should point at the opening double quote. | ||
349 | * + Returns 0 if it was able to unquote the string properly, and appends the | ||
350 | * result in the strbuf `sb'. | ||
351 | * + Returns -1 in case of error, and doesn't touch the strbuf. Though note | ||
352 | * that this function will allocate memory in the strbuf, so calling | ||
353 | * strbuf_release is mandatory whichever result unquote_c_style returns. | ||
354 | * | ||
355 | * Updates endp pointer to point at one past the ending double quote if given. | ||
356 | */ | ||
357 | int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp) | ||
358 | { | ||
359 | size_t oldlen = sb->len, len; | ||
360 | int ch, ac; | ||
361 | |||
362 | if (*quoted++ != '"') | ||
363 | return -1; | ||
364 | |||
365 | for (;;) { | ||
366 | len = strcspn(quoted, "\"\\"); | ||
367 | strbuf_add(sb, quoted, len); | ||
368 | quoted += len; | ||
369 | |||
370 | switch (*quoted++) { | ||
371 | case '"': | ||
372 | if (endp) | ||
373 | *endp = quoted; | ||
374 | return 0; | ||
375 | case '\\': | ||
376 | break; | ||
377 | default: | ||
378 | goto error; | ||
379 | } | ||
380 | |||
381 | switch ((ch = *quoted++)) { | ||
382 | case 'a': ch = '\a'; break; | ||
383 | case 'b': ch = '\b'; break; | ||
384 | case 'f': ch = '\f'; break; | ||
385 | case 'n': ch = '\n'; break; | ||
386 | case 'r': ch = '\r'; break; | ||
387 | case 't': ch = '\t'; break; | ||
388 | case 'v': ch = '\v'; break; | ||
389 | |||
390 | case '\\': case '"': | ||
391 | break; /* verbatim */ | ||
392 | |||
393 | /* octal values with first digit over 4 overflow */ | ||
394 | case '0': case '1': case '2': case '3': | ||
395 | ac = ((ch - '0') << 6); | ||
396 | if ((ch = *quoted++) < '0' || '7' < ch) | ||
397 | goto error; | ||
398 | ac |= ((ch - '0') << 3); | ||
399 | if ((ch = *quoted++) < '0' || '7' < ch) | ||
400 | goto error; | ||
401 | ac |= (ch - '0'); | ||
402 | ch = ac; | ||
403 | break; | ||
404 | default: | ||
405 | goto error; | ||
406 | } | ||
407 | strbuf_addch(sb, ch); | ||
408 | } | ||
409 | |||
410 | error: | ||
411 | strbuf_setlen(sb, oldlen); | ||
412 | return -1; | ||
413 | } | ||
414 | |||
415 | /* quoting as a string literal for other languages */ | ||
416 | |||
417 | void perl_quote_print(FILE *stream, const char *src) | ||
418 | { | ||
419 | const char sq = '\''; | ||
420 | const char bq = '\\'; | ||
421 | char c; | ||
422 | |||
423 | fputc(sq, stream); | ||
424 | while ((c = *src++)) { | ||
425 | if (c == sq || c == bq) | ||
426 | fputc(bq, stream); | ||
427 | fputc(c, stream); | ||
428 | } | ||
429 | fputc(sq, stream); | ||
430 | } | ||
431 | |||
432 | void python_quote_print(FILE *stream, const char *src) | ||
433 | { | ||
434 | const char sq = '\''; | ||
435 | const char bq = '\\'; | ||
436 | const char nl = '\n'; | ||
437 | char c; | ||
438 | |||
439 | fputc(sq, stream); | ||
440 | while ((c = *src++)) { | ||
441 | if (c == nl) { | ||
442 | fputc(bq, stream); | ||
443 | fputc('n', stream); | ||
444 | continue; | ||
445 | } | ||
446 | if (c == sq || c == bq) | ||
447 | fputc(bq, stream); | ||
448 | fputc(c, stream); | ||
449 | } | ||
450 | fputc(sq, stream); | ||
451 | } | ||
452 | |||
453 | void tcl_quote_print(FILE *stream, const char *src) | ||
454 | { | ||
455 | char c; | ||
456 | |||
457 | fputc('"', stream); | ||
458 | while ((c = *src++)) { | ||
459 | switch (c) { | ||
460 | case '[': case ']': | ||
461 | case '{': case '}': | ||
462 | case '$': case '\\': case '"': | ||
463 | fputc('\\', stream); | ||
464 | default: | ||
465 | fputc(c, stream); | ||
466 | break; | ||
467 | case '\f': | ||
468 | fputs("\\f", stream); | ||
469 | break; | ||
470 | case '\r': | ||
471 | fputs("\\r", stream); | ||
472 | break; | ||
473 | case '\n': | ||
474 | fputs("\\n", stream); | ||
475 | break; | ||
476 | case '\t': | ||
477 | fputs("\\t", stream); | ||
478 | break; | ||
479 | case '\v': | ||
480 | fputs("\\v", stream); | ||
481 | break; | ||
482 | } | ||
483 | } | ||
484 | fputc('"', stream); | ||
485 | } | ||